Combined type-writing and computing machine.



- F. A. HART. comma!) TYPE wrmme AND commune mcmms.

APPLICATION FILED OCT. 6. i913.

Patented Feb. 12,1918.

2 SHEETS-fliHEET I.

Itllllllllllll F. HART. COMBINED TYPE WRITING AND COMPUTING MACHINE.

APPLICATl ON FlLED OCT. 6. i913 Patented Feb.12,1918.

2 SHEETS-SHEET 2.

, used In other kinds of machines.

UNITED STATES PATENT OFFICE.

FREDERICK A. HART, OF NEWARK, NEW JERSEY, ASSIGNOR TO UNDERWQOD COMPUT ING MACHINE COMPANY, OF NEW YORK, N. Y., A CORPORATION OF NEW YORK.

COMBINED TYPE-WRITING AND COMPUTING MACHINE.-

Application filed October 6, 1913.

"a register may be appropriated to each column.

The invention is especially valuable in connection with combined typewriting and computing machines, although it may be In computingmachines it has been customary to print on the work-sheet a distinguishing sign to indicatea clear on zero condition of the computing mechanism or ,to indicate some other particular fact inconnection with some particular item, or in connection with such register as is active at the. moment; and in machines having a totali'zer appropriated to 'each column, it has been customary to have a separate clearance printing key foreach register operating its "own clearance type. With such a construction it would be possible to print a clearance sign in any of the columns ,onthe work-.

' v sheet Without, vin fact, having cleared :the particular register appropriated to that column, thus giving a false assurance that the' totalizer in such column stood at zero. One of the main features of my invention, therefore, is the prevention of the printing of the clearance sign on the work-sheet at a column of figures which is being added in a totalizer, which latter at the tune was not standing at zero. Unless the totalizer, which is in use, stands at zero, the depressionof the clearance key belongin to a different totalizer cannot cause the c earance sign to be printed, even though said different totalizer may stand at zero. v In applying my invention to a combined typewritingand computing machine, the

carriage is arranged to determine the column or-columns in which adding or printing Specification of Letters Patent.

' nomination-selecting devices, 0

Patented Feb. 12, 1918.

Serial 1%. 793,575.

'is to be done, which carriageis'also arranged to control the printing of the clearance sign in any particular column. In the construction shown the carriage is connected to a special key to determine'in what column said key shall print the desired sign! One form of key which is commonly used is one that prints a sign to show that thecomputing Wheels all stand at zero. [Such keys are commonly known as starkeys or clearance-proving keys.

' My invention is illustrated as applied an Underwood-Hanson combined t ewriting and computing machine, in luch the typewriter carriage comprises e usual platen about which a work-she may be .passed, and is usually providii with' (10 .fi 1's..f determining on what computing wheel the numberrepresentcd by any'numeral key operated shall be registered. Said carriage is. sometimes provided with several denoininalion-selecting dogs, one for each register in the machine. I Where the special key in connection with a register is the usual star key of saidUn- "derwood-Hanson combined typewriting andv computingmachine, the typewriter carriage,

may be provided with Starkey-controlling or impression-controlling dogs correspond ing to any or all of the aforementioned, denomination-selecting dogs, each one ofsaid impression controlling 'o'fr. key-controlling dogs so cooperating with any star key that it permits said star key tobe operated only at 'the column or letter-space which is deter minedby said key-controlling dogl In said Underwood-Hanson combine d typewriting andcomputing machine, there isusually provided a star key for each. register, each key operable only when its register ands at zerjo, all'of said keysgbeing conn e btible to a type bar to print. a--star; in thecolumn here computing is, being done. According to my present invention,

' there may be a. plurality of impression-controlling or key-controlling dogs, each-so set that it will be elfectiveon onlyone, orse' lected ones, of the star printlng keys or de:

.vices. Said key-controlling dogs may conveniently formed as tappets or lugs settable along the ordinary columnstop rack. bar of the Underwood typewriting inn-- chine, and advantageously said lugs may he formed as extensions of the ordinary Under wood column stop. Said dogs may be lo cated in diilerent planes on said stops, and coiiperatc with correspondingly arranged cams, each cam controlling a predetermined star key or keys, but ineli'ective on any other star key or device. Said cams may be of a length corresponding; to the width of column in which the printing is permissible. Where used for a key which should be operated only in a single letter-space in any column, said cams may be correspondingly formed to be efi'ectivc over only such a lettor-space.

This invention, it will also be noted, may be used to Prevent the special character from being printed anywhere on the work-sheet except in proximity to the computing zone or zones.

' Other features and advantages will hereinafter appear.

In the accompanying drawings,

Figure 1 is a sectional side view of so much of an Underwood-Hanson combined typewrithag and computing'machine as is convenient for showing my invention as apfposition.

' Fig. 6 is a rear view or the parts seen in Fig. I

Fig. 7 is a sectional side view of a register, its star key, and some of their connections. v

- In the usual combined Underwood-Han son -typewriting and computing machine, typewriter keys including numeral keys 1 when depressed swing type bars 2 upwardly and rearwardly against a platen 3, sh as' to cause type 4* on the type bars 2 to print on a'worksheet passed around said platen.

' Saidplatem as isusual, is mounted in a carriage 5, Which carriage is fed along at every key stroke by an escapement Wheel 6 with which the usual dogs 7 and 8 coiiperate,- said dogs being operated in the usual manner by a universal bar 9 which is moved by heels 10 on the type bars 2 at every key stroke.

Said typewriting machine also comprises the, usual denominational tabulating keys 11 on key levers 12, said keys when depressed raising plungers 13 into the path of column stops 14, said column stops being mounted in the usual manner on a rack bar 15 forming part of the carriage 5.

Whenever a tabulating key 11 is depressed, 'it releases the typewriter carriage from the cseapement wheel 6 in the usual manner not shown herein, 'so that the de pression of said key automatically will cause the typewriterto come to rest by bringing the column stop 14 against a selected counter stop 16, which is formed at-the upper end of the plunger 13.

As the typewriter carriage tmvelsalcng;

it causes the numbers represented by the numeral keys depressed to be registered onthe-appropriate computation members 16, there' being one of said computation members 16 for eaeh dial or computing wheel 17, from which computing wheels theadded numbers may be read by the operator through a sight opening 18.

T 0 select the proper computation member 16 the typewriter carriage is provided with an upwardly extending bracket 19, said bracket carrying a denomination-selecting dog 20, which, as the typewriter carriage passes along from left to ri ht, raises se'm'atim a series of jacks 21, whie are each connected to move a computation member 16 to effective position, and" when in said effective position, the numeral key 1 then being operated, will registcron said computation member the digit represented by the key operated.

The connections for thus raising the computation members" 16". to effective position, include for each jack 21 3. rod ,22,'-which underlies the rear end of said jack so that as said jack is swung about its pivot 23 by the denomination-selecting dog 20, the lower end of said jack will be moved downwardly to swing a lever 24 pivoted'between its ends, causing the front end of said levei', through the usual Underwood PHanson transposition device 2,5, to raise the computation member 16 corresponding to said jack into efleetive position. The transposition devices are shown more in detail in. the British Patent No. 3390 of 1912' Since the typewriter carriage travels to the left and the first digit must be registered on .the left-hand computing wheel, said transposition device is necessary so that as said typewriter carriage moves. fro'm'right to left, the digits will besuccessivelyregistered in computation members beginning at the left and going toward the right.

' The digits represented by the numeral keys struck, are registered scriatim on said computation members 16", byf settable' plisns' QB, there being one piii'Tor'each digit.

t een the numeral keys 1 and the eomputa- I computation member 16 at any moment hav ng its pins 26 in effective position. When all the digits representing the desired item have been. thus set up on successire computation members 16 by the depression of pins 26, said digits are carried into the computing Wheels 17 by means of a general operator, said operator including a cross bar 32 which conies forward and strikes the depressed pins 26, thereby carrying the computation members 16' forwardly,

.' so that racks 33 on the front ends of the computation members will turn the computing Wheels 17 through pinlons and paWls not show-n hGle1I1.- It is evident that said -movement of the general operator will, in

r the usnalmanner, rotate said computing set up. w i

The general operator .is operated-in thesition at the end of said return stroke. 45

wheels to anextent depending on the pins usual manner by a handle, not shown here in, attached to the usual segment 34,- which segment, through an idle pinion 35,v drives a rack bar 36 forming a side member of the general operator. The carryin'g over from one computing Wheel to thenext is done in the usual manner, not shown herein, on the return stroke of thegeneral'operator. The comp'utationmembers 16 are brought back to normal position by said return stroke and the setflpins are returned to normal 130- Associated witlreach computing wheel 17 is a spring detent 37, which holds said comppting wheel againstimproper turning. -The computing mechanism also includes the usual star key 38, which whenthe computing wheels all stand at Zero, may be depressed lijiaiiuallv to cansethe star to be printed on the wo1-kssheeton the platen 3.

y 3!); said arm underlies the st'e'm 40 ofthe 7 Illie. eo11i1ections f0r accomplishing this printing may he of the usual kind, whichincludea rock arm 39 fast on a rock shaft stat key 38, and is'held up ag'ainst said stein hy-a SPIH'IQ' 41'. 'Anothenggitrm 42 fast on said rock shaft 39,carries apinj43 riding in a .blot in a type-operating bell crank 44, said bell crank 45: operating one of the inn-bars 2 through a key lever 45 of the usual kind, except that it includes no key or'key stem. The key lever 45, in place ofa key, has depending therefrom a link-'46, said link having at its lower end a stud 47, which stud underlies an arm 48 'ofthe typeoperating bell crank 44. The connections are such that when the star key, 38 isdepressed, it rocks the type operatingbell crank 44 through the rock arm 39 to draw down the link 16 and swing th. star key type-bar against the platen 3.

Said star keyusually is arranged to-ibe operable only when the computing-wheels 17 all stand so they display, their-zeros through the sight opening 18. According to my invention, the star key is normally held locked against; operation by means of a locking springassociated with each computing wheel; said lockingsprings, however, may be tensioned-to make them ineffective when the computing. Wheels 17 all stand at zero. To hring-about-this result, the star key 38 maybe normally held locked against movementiby annup-rit standing rock bar lQwhich -underliesgthe key proper near where-"the stem .40 enters said key.

r Said rack bar 49 is fast 'on a roc'k shaft 50 mounted below. the star key-38,. andz'iszr under the constant tension, of a comparatii'ely weakspring 51, which; ifrthe locki-n rock bar 19 is entirely unrestrained, wvil swing said locking bar 49 to ineffective osition clear of the star key 38-. r Said-locking:

bar 49, however, is normally drawn'ito effective position under the star key- 38' by any one of a numberof comparatively strong locking springs 52, of which springs there is one for every eomputingwh'ee'l,

The connections for causing said; springs 52 to normally'draw the lokingbar49 to effective position, include a bail mounted on the locking bar 49 and'on rock-arms 54,

said bail forming a universal bar-which draws the locking bar" 49 to effective 'posi- 'tion under the star key 38, whh b el t y of the springs 52 are effective/ f I The connections between the"sprin'gs?52 and said bail 53 include slotfed-Ylinksiii55f wh'ose slots'engan'e the bail 5'35 and a such length that the lost motion 'bf'th-bail 53 in each slot issu'flicient to'prbiiide moving the locking bar 49jto eager effective position. 1 Said links 55', rearward ends,are pivoted onflnp pivoted itappetsl iifi, 'said' loclfiing springs iii 52 normally drawing sai'd ,tap' tie 56X e ar-l Wardly against the smoothf computing wheels 17,. i p p Each computing wheel is provided onits periphery with a cam Q3 of. SlIlliQlBi'It l iQl lIt to strike a projection 57,1351" the} tappet 56 and move the link '55 forwardly to suchlan, extent that th slot in link 55 Will-permit the locking bar 49 to bemovedfto iinefictive position', so far as the locking spri g'w ii ding associated with that computing wheel is concerned. The result of this is, that when all the computing wheels stand with their cams 58 opposite the points 57 of the tappets 56, the locking bar l9 will be free to be drawn to ineffective position by its weak sprin 51, but if any .one of the computing whee s fails to move its tappet 56 forwardly by its cam 58, its lockm spring 52 will hold the locking bar 49 under the star he 38.

l he combined machine, as herein illustrated, includes three registers shown diagrammatically in Fig. 2, and for each register there IS a separate denomination dog 20, as shown at Fig. 1, said denomination dogs being placed in different vertical planes so that each denomination dog will cooperate only with one set of jacks 21, of which sets the eflective ends 59 lie in planes corresponding to the different denomination dogs 20. Each set of jacks has its own set of rods 22, its own transposition device 25, and its own set of computation members 16 and computing wheels 17, so that each set of computing wheels 17 forms a register separately operable in a manner determined by the typewriter carriage.

Inthese machines as heretofore constructed, there was usually a separate star key for each register, every star key operating its ownitype -operating rock arm 89, but since all said rock arms 39 were fast on the same rock shaft 39*, the depression of any star key, if its totalizer stood at zero, might heretofore have caused the. printing of a star in any of the other columns on the work-sheet, thus giving a false assurance that the totalizer in such other column stood at zero.

means are provided for locking thestar keys against operation at the wrong time.

Forthis purpose, according to my invention, the stem 40 of each star key is cut oil flat,

and has norniallyheld under it a locking rod or plate 60, as seen in Figs. 1 and i.

Said plate is normally held ineffective position by a compression spring 61, and is guided by a recessed supporting plate 62,

I .stops 14 of the Under which hold itup against a plate 63 of the usual computing machine frame. The plate,

60 is'also provided with a ig, 60- riding in a slot 60 tolimit its motion,

Said locking plates 60 maY 'be selectively moved to inefiective posit'iuugwhenever the typewriter carriage occhpi Sfpredeterm-ined positions, so that writing my be done in predetermined columns. For, this purpose,

accordingto my invegipn, the usual column ed mevriting achine are providgd withieamvardly extendplates 60, said lug extending down below and between the plates 62 and forming, if

desired, a guide for the locking plate 6.0.

From the above connections, it will be seen that if the typewriter carnage is posit-ioned to compute in anygiven column by its column stop 14, "said column stop at the same time will cause the cam 65 to move to' ineffective position the locking plate 60, thereby releasing the star key 38, so that the operativeanay at anytime depress saidkey if the computing wheels 17 in that column H stand. at zero.

In order topermit 'theestar. keys 38 of the separate registers'to be selectively released,

the various column stops-14: areprovided with their lugs or tappetsfid set at various 1 heights, and there are also provided corresponding cams 65 at various heights, each cam controlling a selected star key 38 by connections identical with those described above. 1 I v In the illustration shownherein, there are three registers, see Fig. 2, numbered 1,

2, and 3, beginning with the left hand one. As the typewriter carriage travels along, it may be; arrested by the denominational tabulatingkeys 11, so that its column-i stop is numbered f3 'in Fig. 4,,will first be operative to arrest the, typewriter'carriage. lecting (10g 20, 3, and (gojrtegppnding jacks, seen inthe' foreground in. F 1g.,1, are effective, and any numbers wrltt'en in that:

column will be registered registerf f.-

Fig. 2. The star'key 38 corresponding to that register, williat that time be freed from I its locking plate 60 by the lug 64:o'fthe columnstop 14, by which the typewriter carriage hasbeen arrested, said lug, as shown herein, being at the bottom of said column stop.

At this time, the denomination-s1 WVhe-n a number hasheen at this point, the typewriter carriagemaybe if similarly positioned by operationof 'a denominational'lrey 11', to register in register 2, whose star key 38 will in the same man nor be unlocked by thecentral lug 64 on the column stop 14. The register .2, in Fig. 4,

hasTliad-its star-key, not shown therein, un-' lockeclby its unlocking rod 68.' The cam 65, show'iras eifectivein said Fig. 4, isithe middle cam cotiperating with the middle The typewriter carriage may again be positioned by a denominational tahnlating 'kcyll. and the column stop 1" will'thcn be effective to arrestthe typewriter carriage. 5 and its lug (H. at the top of said stop. will move said cam 65 to unlock the star key as of the register 1. v

its best seen in Figs. l and (i. the cams (i5, 1 and 2,.are.cnt a way atthcir rear to allow levers (36 of the other cams to be at all times clearof the cams thcmselves. Said cams 65 themselves are rounded ll" at each end so that the ramming lugs (it will pass thcnrreadilv when the t \'pc\\"riter carriage moves in either direction. These rams (i-.3 are joined to their levers 66 by triangular webs 60 which strengthen their backs. 'lhe'levers 66 are held against twisting on their pivot 71 by broad sleeves '70 which are interposed between said l0\'t'l'H :HNl brackets 67., on which.lnracltets the pivot 71 is carried.-

.Themods 69' which control the locking.

plate (30, are close together at their rear I ends where they are joined to the levers Ill so that said levers may stand close together I in a group. The r-oils 6h, however, at tho bottom of the |nach ine are bent outwardly, asseen in Fig. 4, and then for\\ar( ll v, so

that each rod, under its register,- will more in a-nearly backward and forward direction. While I have illustrated the ram 135 as 3 extending over the full width of a column of denominational stops 11. it will be seen that thisis done merely forthe purposes of illustration. because said cams may he of any desired. width toliluit the nlimbcr ot' letterj spaces over which any star' key 38 may he operated. Said number of letter-spaces may be as small as a single lctt-e1-space.'il' desiredL I I. have notclaimed broadly in this appli cation, N0. (i58",-} Z0, ,lilinl: Xovm'nhot- 4 -1911. ,i variations may be resorted to within the .46 'scopeof thein-ventio n-and portions of the meral' .keys', computing wheels and a travel?- ing carnage, of a plurality of registers into wh ch said wheels are grouped, a special non-numeral key associated with cial key, and means controlled by said ca rriage for-determining in what column said special key shall be effective on its type.

2.-In a combined typeWr-iting and com-- 60 puking machine, the combination with numeral keys, computing wheels and a traveL" 1ng'carriage,'=ofaplnralityo registers-into 1 cation matter discloscdin my pending appli-.

' may be effective on said type.- Said 55 wheels, :1 type undcrthe control of sa.id"spe-' -said special type means on each :wheel-con- I which said wheels are grouped, alrey opera able only when computing wheels stand at' 0 zero, a,- type under'the control at said zeros-.

special type key. y i 8. Ina computing m'achine,1'the combine- 130 controlled key, and means controlled by said carriage for determining in what column said special key shall be effective on its type.

3. ln a combined typcwrlting and comparing machine, the combination with 1111- lncral keys, computing wheels and a traveling carriage, of a plurality'of registers into which said wheels are grouped, a specia non-numeral key associated with each group, a single type under the control of all said special keys, and means for jointly controlling said special keys both by their respective ronps of wheels, and by the carriage for dhtermining in what column each special key shall be effective to control said type.

4:. In a combined typewriting and computing machine, the combination with numeral keys, computing wheels and a traveling carriage; of a special non-numeral key associated with said wheels, a typo controlled by said special k,c a member associated with each wheel for controlling saidf special key, anda member associated with the typewriter carrier 0 and acting con-" jointly with'saidwhe'c control for control ling the column or position'on the work sheet in which said special 'key causes printing;

5. 1m a combined typewriting and-cow pix-ting machine, the' combination with 'n'nme'ral keys computing wheels and a trayel ing carriage, of 'a p'hirality of registers into which said wheels are grouped, a special non-numeral key associated with each'group of computing devices of which said wheels form a part, a single'type' selectively under the control of all of said s ecial keys, and means under the control 0 the typewriter. carriage for selectively determining which of said keys may be efiective on said type.

6. In a combined typewritingfand c'om puting machinc, the combination withjnumetal keys computin wheels and-a travcling carriage, of a plur. lity of registers into 5 which said wheels are grouped. a zcro' prov ing key associated with each group of wheels, :1 single type operable any ofsziid zero keys- :1. device on each computip'g wheel to control its'zero key, and means under the control of the ty ewritcr ca'rriagehnd acting conjointly wlthsaid wheel control for selectively determining which of said keys 7."In a' computing machine, the combination with numeral keys, atravcling carriage and 'computingwheels, of printing types, a special type operable to print a sign, registers comprising groups of said computing wheels a key for each-registercontrolling 12;.5 trolling itsspecial type lfey, and means on thofcarriage -actm cpn]o 1ntly "w th said wheel'contjrol forfs'e ectr contro1hng'sa1d wheels, of a special printing key, a locking device for said special key, means associated with each wheel for normally holding said locking device eifective, means on each computing wheel for disabling said effective means, and means for movin device to efiective position w ienevery one of said effective means is disabled.

9. In a computing machine, the combina tion with numeral keys and a gang of con1- puting wheels, of a special printing key, a locking device for said key, means associated with each computing wheel for holding said locking device effective, means on each computing wheel for disabling said effective device, a universal bar under the control of every efi'cctive device of a gang, and a spring for making said lock ell'ective when each computing Wheel is in disabling position.

10. In a computing machine, the combination with computing wheels forming a gang, of a hi on each computing wheel, a tappetfor eac lug arranged to be, moved thereby when its computing wheelstands at zero, -a special printing key, a lock for said special key tending to become effective, and a spring, for each tappet normally holding said lock eflective but rendered ineffective by said lug.

11. In a computing machine, the combination with computing wheels forming a gang, of slug on each computing wheel, a tappet for each lug arranged to be moved thereby when its computing Wheel stands at zero, a special key, a locking arm for said special key, a spring tending to move said locking arm to ineffective position, a bar connected to said locking arm universal to said tappets, and means associated with each tappet for drawing said universal bar and lock to effective position against the tension of said spring.

12. In a computing machine, the combina' tion with computing wheels forming a gang, of a lug on each computing wheel, a tappet for each lug arranged to be, moved thereby when 1ts computing wheel stands at zero, a

universal bar, a lost motion device connectmg each tappet to said universal bar, aspecial key, a lock normally holding said special key but normally tending tomove to ineffective position, and means associated with each tappet normally drawin said universal bar to hold said lock efi'ective but'moved to ineffective position by said-lug.

1 3, 'In a computing machine, the combination with a special key and a key stem, of tw o locks therefor, one of said locks comprising a bar movable under the key, and the other of said locks comprising abar movable under the key stem.

14. In a computing machine, the combination with a traveling carriage and; type printing seriatz'm thereon, of numeral, keys,

a plurality ofregisters controlled by said said locking means associated with sai 'said keys.

keys, a special key associated with each register, a single type under the control of all of said special keys, and means under the control of the carriage for determining which special key may be operated. y

15. In a comblned typewriting and cornputing machine, the combination with a traveling carriage and printing type, of numeral keys controlling said type, a tabulating stop settable-cn said carriage, a non-nu-' meral key also controllin said type, and means associated with sald stops for con trollin said nonnumeral key.

16. n a combined typewriting and corn puting machine, the combination with a traveling carriage and printing type, of numep'al keys controlling said type, tabulating devices for positioning said carriage, a nonnumeral key also controllin said type, and

d tabulatingdevices for controlling said non-numeral key.

17. In a combinedtypewriting and com puting machine, the combination with a. traveling carriage and printing type, of numeral keys control-ling said type, anon-nuineral key also controlling said type, a tabulating stop rack bar on said'carriage, and means settable onsaid rack bar for'de'termining aletter space in which said non-nu meral key will be effective to print; 9

18. In a combined-typewriting and com puting machine, the combination with a. travellng carriage and printing type, of numeral keys controlling said type, a denomination selector carried by said carriage, a 1 non-numeral key also controlli said type, a tabulating stop'settable on sai 'carriage'to position said denomination selector, and means associated with said'stop'to control 19. In a combined type'writing and com- .puting machine, the "combination witli a traveling carriage andjmintingtype, oinu- I I meral keys controlling said type,'i'computin Wheels forming a totalizer a nonmumis'ra 1 key associated withsaidtotalizel a printing type operable by said key, acolumn stop on] means under the control of said carriage for" 12s.

determining which of said speclal keys may be effective on said singlety e. 1 .y 21. In a typewriting mac ine," .thefcon1 b ination'vvith keys aiiditype operated thcrcby i of a traveling carriage, Especial key,fa type 125 operated thereby, and means'iundenthe' control of said carriage i said key maybe eflectiveonits typer; '22. In a combined typeyypiting-andycomt puting machin fthe;eembinatmnjwith' men tkeys'anda plurality ofigahgs of-v eom-l piiting wheels, of a speciallrey; associated i\'itl1:eacli gang, :1 printingwtype ander. the control fsaid special'key, a traveling car- 5 riage,-:and means under the.coiitrol of said v g typewriter carriage and a tabukey".- thcret'in, of column stops for arresting said; cai'riage at a point determined by saitllgeys, gangs of computing wheels, a

speciaipii nting key associated with each' gang. and means under thecontrol of said column stops for locking any special key.

' The combination of agang of computing wheels, :1 special key, a lock for said key, a spring tending to release said lock, a series of stronger springs to prevent the lock from being released, and means to cotiperate with 1 said wheels .to overcome such strongerspriiigs and to permit the release of the lock by the. first-mentioned spring.

26. The combination of a gang of computing wheels, a special key, a lock for said key,

a spring tending to release said lock, a series of stronger springs to prevent the lock from being released. projections upon said wheels, and a series of devices operable by said projcctions to overcome the tension of said stronger springs and to permit the firstmentioned spring to release the lock.

27. The. combination of a gang of computing wheels. :1 special hey, a self-releasing lock forsaidkcy. a series of devices in'dividually capable of holding said lock in effective position, and means to co-act with said wheels toforce said devices to ineffective positions and permit the lock to release the 5 key.

2S. llie combination with a carriage and a gang of computing ivhccls, of a device associated with said gun; for printing a special charactcn two locks for said device, means for enabling said wheels-to release one of said locks, and means for enabling said carriageto release the other of said locks. 129. The combination with a gang of computing wheels and a carriage. of a special fiokcv associated with said gang, a. lock normally locking said key, a t'app'et or lug on 55nd carriage; a cam operable. by said tappet or lug, a leverconnccted to said cam and a linkconnccting said lever to'said lock.

65. The, combination 015 a "plurality of ggangs.onconipiiting iels; ,a is ecin key foneach gang, aca'rriage, 1a pli rality of tap pets or' l i; 's on said carriage, one for each '1 ofsaid keys, aapli i ality oflcainsfeach"indi pining, machine, the combination with a' vidiial to one of said tapp 'ets to be controlled exclusively thereby, a loci: for "each of said keys, and means connecting said-cams to said locks, whercby\ \\'licn the'carriage is in one position, one key is locked, andivhen the carriage is in another position, another key .75 is locked. 31. Acompnting machine having printing mechanism, a carriage. for determining the position of the columns to be' printed on a work-sheet, adding mechanism for adding in 30 din'erent columns during the progress of said carriage; and comprising, in coinbiiiatioin'a clearance sign printing typc, and means adjustable along the carriage for rendering said type effective in different zonesor columns I v 32' A computing machine having'computiiigj dericcsfand'printing devices; for printing and coiiiputin'g in different; ZOTiESQ "MNT comprising, in combination. a special clean aiicc type, and ineansindii'idiial to the xiii-"'1 -ferent zones to cooperate with said computing devices to control the printing of said special clearance type on the work-sheetin 7 each zone,

A computing machine'having printing means and computing means, to' print and compute in zones or columns; and comprising, in combination, a clearance sign, a clearance key controlling the printing of said sign. and means to control the operation of said key to prevent: it from printing outside of the zones to which belongs the clearance sign printed by the key.

34. The combination with a computing 10 5 mechanism capable of computing in. a. pinrality of ditferentyomputing zones, of a. special pr nting means for printing a cliar 'acteristie mark indicativeof a peculiar condition'of. the computing mechanism, and means individual to each zone for control-' ling said special pr nting means to enable the printing of a special indicating character a in each computing zone when the computing mechanism corresponding to such zone is in a certain special condition.

35. The combination --with a computing I mechanism, of a carriage traveling. todetermine computing zones for aid computing mechanism:, a. printing mea s for pi inting 'on a work-sheet carried by the carriage a sign characteristic of a certain condition of said computing mechanism, "controlling means for governing the activity of said printing means. means for renderingsaid 2 controlling means ineffective, and means for"- 7 operating said controlling means from said carriage when said coiit rol-ling meansis in ,efiective'condit'ion. p

36. The combination with a total zer ncluding a series of computing wheels, of a key, a lock for said key, means normally tending .to release said lock, a plurality of restraining units for maintaining said lock in action, there being one of said restraining units for each of sai computing wheels, and an enlargement on each of said computing wheels for positively releasing the associated one of said restraining units, whereby when all of the computing wheels have the enlargements. thereon in register and are in zero position, said lock will be automatically re- "leased tapermit an actuation of said key.

37. The combination with a computing mechanism includin a totalizer lraving a pluralityof computlng wheels, of a key, a lock for said key, a minor spring tending to release said lock, a plurality of major 5 rings,

mechanismncluding a plurality of computing wheels, of a traveling carriage, and a key normally controlled by said computing wheels and said. carriage jointly so as to be inactive but releasable when said carriage assumes a predetermined position at the same time that said wheels assume a predeter- 39. The combination with a key, of a lock for said key, releasing means for said lock. a plurality of restraining units for said lock, each having a lost-motlon connection with said lock so that any number of said re straining units less than all can be in their releasing position while said lock remains in its active position, and a plurality of computing wheels, each having a change in con tour-thereof, for determining the releasing position of each unit, whereby when allof the changes of contour of said wheels are in register, and the wheels in a certain position, said lock will be silenced by, said releasing means, permitting an action of said key.

FREDERICK A.

mined relation.

, Witnesses:

E. B. LrBBnY, B. GOLDBERG. 

